Matrix-composing and line-casting machine



Jan. 12 192a. 1,569,389

; o. E' gnscn MATRIX COHPOSING AND LINE CASTING MACHINE Filed May 22, 1925 Patented Jan. 12, 1926.

UNITED STATES PAT NT OFFICE.

OTTO PAERSCH, OF BERLIN, GERMANY, ASSIGNOR TO MERGENTI-IALER LINOTYPE COMPANY, OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

MATRIX-COMPOSING AND Application filed May 22,

To all whom it may concern:

Be it known that I, OTTO PAERSCH, a citizen of the German Empire, and residing at Berlin, Germany, have invented new and useful Improvements in Matrix-Composing and Line-Casting Machines, of which the following is a specification.

In a matrix composing and line casting machine it is already known for the keyboard to be provided with a continuously rotating roller with which, when a key is depressed, a cam rotatable in a pivoted yoke, is brought into co-operation to effect the release of a matrix. Heretofore the said roller has been provided with an india rubber cover corrugated longitudinally. This india rubber cover had the disadvantage of having its corrugations worn out comparatively quickly, thereby reducing the diameter of the said roller and consequently lifting the respective escapement reed to an extent insufficient to efiect the release of a matrix.

The present invention overcomes this difficulty by providing the india rubber cover with longitudinal corrugations or serrations at only one or more parts of its periphcry whilst the intervening portion or portions of the periphery are left smooth or plain. The said plain portion or portions ensure a proper uniform lift being imparted to the escapement reeds.

In the accompanying drawing which illustrates by way of example a constructional form of the invention Figure 1 is a diagrammatical representation of the pertinent parts of the machine;

Figure 2 is an elevation of part of the india rubber covered roller shown in Figure 1, and

Figures 3 and 4 are transverse sections through alternative forms of the roller.

IVhen a key a is struck, the corresponding cam yoke c is released in the known man .ner by the rocking of the trip dog 5. The cam d pivoted within the yoke o is thereby allowed to fall into engagement with the continuously rotating roller 6 beneath it. The cam (Z is rotated by the said roller and the yoke 0 is thus rocked about its pivot f. It thereby rocks the escapement it about its pivot 2' through the respective escapement reed g and thus in the known manner, effects the release of the lowermost matrix la.

According to the present invention the india rubber covered roller 6, is provided LINE-CASTING MACHINE.

1925. Serial No. 32,011.

with longitudinal corrugations m not over its whole circumference as heretofore, but only at certain intervals or segments, whilst the remaining intervening peripheral portions of the roller are smooth. The advantages of a completely corrugated roller are thus combined with the advantages presented by a plain roller, i. e. on the one hand a proper working contact with the cam d is ensured, and on the other hand the corrugations are subjected to such reduced wear that an adequate operation of the escapement mechanism will always be assured.

If preferred, and as shown in the drawings, the corrugated and the smooth surfaces of the roller 6, may be pluralized so that the periphery will be divided into a plurality of smooth and corrugated portions alternating with each other. Thus, the periphery may be divided into two corrugated and two smooth portions, as in Figure 3; three corrugated and three smooth portions as in Figure 4, and four corrugated and four smooth portions as in Figures 1 and 2. It may, however, be found suflicient, in certain cases, to divide the periphery into only two portions, i. e. one corrugated and one smooth.

The external diameter of the roller is the same over the corrugated portions as it is over the smooth portions, and, if desired, these said portions instead of being of the same angular extent as in the drawings, may differ in that sense.

I The present invention is hereinbefore described as applied only to india rubber covered rollers, but it is to be understood that it may be embodied in or used in connection with rollers of any other material, such as metal or the like.

Having described my invention, I declare that what I claim and desire to secure by Letters Patent is 1. In a matrix composing and line casting machine, a roller adapted to drive the keyboard cams, characterized by the fact that only a portion of its periphery is provided with corrugations or serrations.

2. In a matrix composing and line casting machine, a roller according to claim 1, characterized by the fact that the corrugated peripheral portions alternate with smooth portions.

In a matrix composing and line casting machine, a roller according to claim 1, having its peripheral surface divided into corrugated and Smooth portions, said portions being of equal angular extent and alternating with each other.

4C. In a matrix composing and line casting machine, a roller according to claim 1, having its peripheral surface divided into corrugated and smooth portions alternating with each other and extending longitudinally of the roller, the external diameter of the corrugated portions being equal to that of the smooth portions.

5. In a matrix composing and line casting machine, a roller according to claim 1, having its peripheral surface divided into corrugated and smooth portions, said portions being of equal angular extent and alternat ing with each other and extending longitudinally of the roller, the external diameter of the corrugated portions being equal to that of the smooth portions.

6. In a matrix composing and line casting machine, the combination with a pivoted yoke adapted to operate an escapement actuating reed, and a cam pivoted within the yoke, of a continuously rotating roller beneath the cam, said roller having its periphery divided into corrugated and smooth portions arranged in alternation.

In testimony whereof I have afiixed my signature hereunto.

OTTO PAERSCH. 

